Scraper



April 14, 1925.

P. C. ANDERSON SCRAPER Filed April 30, 1923 2 Sheets-Sheet l mm mm Mm Rim w y Nl e B M QQ J N L m n@ M zr.. w

Troie/vifs i 1,533,720 P. c. ANDERSON SGRAPER Filed April so, 192s 2sheets-snee: 2

IN VEN TOR Q S.. .Ruzxm wmf@ palmas Patented Apr. 14, 1925.

PHILIP c. ANDERSON, or RAPID CITY, soUrnnAxoTA.

SCRAPER.

Application filed April `30, 1923. Serial No. V635,746.

To all lzii/20m 'it Imay conce/11a.'

Be it known that I, PrIILIr C. ANDERSON,

a citizen. of the United States, and a resi# dent or' Rapid City, in thecounty of Pennington and State ot South Dakota, have invented a new anduset'ul Improvement in Scrapers, ot which the following` .is a full,clear, and exact description.

My invention relates to improven'ients in Scrapers, more particularly toScrapers for use on road construction or the like, and it consists inthe combination, constructions, and arrangements heren described andclaimed.

An object of my invention is to providey :r scraper of the bucket type,which `is` mounted on wheels and which is primarily designed to be drawn'by a tractor, novel means being provided whereby the bucket may beeasily raised, owing' to the fact that the p ull otthe tractor aids inthe raising operation, thereby reducing the labor required to raise aloaded bucket to its carrying position.-

A further object of my invention is to provide a novel power means fordumping the bucket at will, said means comprising a clutch -mechanismfor connecting the dumping mechanism with the axle of the wheels uponwhich the scraper is mounted.

A further object of my invention is to provide a construction which iscomparatively simple, and yet which is strong enough to withstand therough uses to which such devices are ordinarily put.

Other objects and advantages will appear in the following specification,and the novel features ot the yinvention will be particularly pointedout in the appended" claims.

I My invention is illustrated in the accornpanyiugdrawings, forming partof this application, in `which;

Figure l ifs a side elevation ot the device,

`-VFigure rvis' a rear elevation.

.Figii'ie 3 is a plan' view', Figure tis a `detail'view o't mechanism,and .i

Figure is 1a sectionalonn' the line' 5--5 of' Figure 4,1ooking in `thedirection ot the arrows;l i f In carrying out my invention, I provide a-frame, preferably of channel iron'and of the shape yshown in FigureThis frame includes side members 1 andinclined rear the clutch endmembers At` the 'liront end of the frame are up\vai."dly and inwardlyinclined trame members '3, which are secured to a guide block orbearingl t. Upper frame members 5 are rigidlysecured at their front endsto the ,duide block ll, and follow the,

conto-ur of the lower frame members, extending rearwardly and downwardlyand being' connected with the lower trame members at the rear end (seeFigure l). VAt this point there is an eye 6 which forms a means torattaching another scraper, so that the scrapers maybe drawn in trains.

f rPivotally secured to the lower frame members at 7 are inwardlyinclined drawbars S which are connected at their forward l ends 'bymeans otra. clevis 9. This -clevis is also rigidly secured to a curvedrack or quadrant 10, which passes through the guide block 4t, the latterbeing provided with a roller 11 which bears on the inner curved edge oithe rack to guide the parts in their relative movement, as will beexplained later.

Towardfthe rear ot' the device are uprights 12 bearing` a cross member13, while' toward the forward part of the deviceare rearwardly andinwardly inclined uprights 14V which support a bearing 15. Ahand wheel1G is securedto the endof a shaft 17,k which passes through a bearing onthe bar 13, thence through the bearing 15. An intermediate shaft 18 isprovided with a universal coupling` at 1.()A to connect wit-l1 theshatt- 17, and also with the universal cou.- plint'` 20 to connect withavstub-shatt 21 bearinga worm at 22, the stub-shaft being journalled inthe guide block 4, as shown in Figure 1'. i

Secured to the lower traine members l are bearing'v blocks 23l (see-Figure .1), throughwhich an axle 2i extends. Wheels are mountedon theaxle. and it will be noted that these wheels are within the sides of thetrame; VTlie'wheels are rigidly securedto the axles and turn with thevlatter. Toward the center ot the devicethe axle Q4 is provided with aloosely mounted pinion Q6, which isprovided with lugs or teeth 27arranged to engage similar lugs or teeth 2% on a clutch member 29 whichis keyed to the `axle (see Figure. et). The pinion 26, which,

as stated, is loosely mounted on the axle 251., so as to permit thelatter torevolve idly within the pinion, is in mesh with a gear 30,which ismountedv on ashatt 3.1:` A(see` nio `v with handles al.

bucket trame.

to the gear BOat and to the pivotal con-l shaft A3T, having an arm 3Spivotally connected at 2") with a control rod or lever l0, the upperendoit which is provided Normally, the lever 40 is held in a lowerposition, that'is to say, to disconnect the pinion 26 from the clutchmember 29. 'lo this end a stop member 42 is provided. The upper end ofthe lever f du() is normally underneath the. stop member,

and is held insuch position by means of a spring. 4.8 (see Figure i ltmay, howeverybe pulled out from under the stop member by' swinging it onits pivoted connection, and then when the upper end oi the lever hascleared the stop men'iber 42, the spring; Lil on the axle will 4torcethe pinion 26 into mesh with the clutch member 2S), thus impartizfr;rthe rotary movement of the axle 24. to the gear S0. lhen it desired todisconnect. the ,ejear 30 from the driving; mechanism, the handles -llare gripped and 'thrust downwardly andA -fjorwardly underneath the stopmember. This, through the medium of the arm 3S and the lyoke 36, will'force the pinion 26 out of engagement with the clutch member 29against' the tension of the. spring` 44. The parts will be held out ofoperative position when the lever n'l0 is underneath the stop menibei42. I.

f ln front of t-hewheels is the scraper This, as will be seen from thedrawings, is pivot-ally connected at T with the "frame portion. The.rear end of the bucket is pivotally connected at 46 with a pair 'ofbucket lifting' links a7, which are, in turn. connected at #t8 withlinks 4:9, pivotally secured at 50 on a portion of the A crank arm 5l`is pivotally secured net-tion at 48. where the members 47 and Llflfarepivot-ally connected together.

From the ,foregoing description of the variousA parts' of the device',the operation thereof may be readily understood. Figure l shows thecarrying position of the scraper. lt is linimarilv designed to be drawnby a tractor-.and it may-be lowered by operating' the hand wheel 1G, forit will be observed that when the hand wheel 16 is turned. the worm 22will beforeed to travel along the rack 10. being' guided by the rollerlil. The point ot attaclunent 9 cannot move upwardly, so that wl'ien-thehand wheel is turned clockwise, a buckling movement oi' the frame withrespect to the draw-bars .t takes place at the pivot 7,y which willeausil the latter to move downwardly around thel axle 24 as a center,and thus swing the. bucket in position to scrape up the earth.

-Then it is filled, a reverse movement of the handle 16, together withthe pulling force. will cause the loaded bucket to be raised into thecarrying position, as shown in Figure l. l f

The bucket is now drawn along to the dumping position, and when it isdesired to dump, the operating' lever Ll0 is pulled rearwardly from; thestop member 42 and also upwardly. The spring 2el-y (see Figure el)thereupon forces the pinion 2G into engagement with the clutch i'nember29, as hereinafter described, thus causing the rotation of the gear 30.Assuming that the gears are rotating in a clockwise direction, as shownin Figure il, the crank arm 51 will be raised from. its full lineposition to the dot-ted line position` and then will cause the swingingof the links 47' into the dot-ted line position, thus dumping the load.Further rotation of the c ank Aarm 5l will cause the bucket. and thelinks 47 to resume their normal position, but as the stop member 42,which is carried by the member 47, apliroaehes' the carrying position,it will engage the leve-r l0 and will torce `it downwardly, therebydisconnect-ing the pinion 26 from its associated clutch member 29 andstopping the rotation of the `rear 30. This occurs, as will be readilyunderstood, when the bucket has reae-hed its carrying position, i, e.,the position shown in Figure l.l

These Scrapers are designed to be operated in trains, and the pointedends facilitate. the turning of the units of .the train in a shortradius. lVit-h vtrains oi scraper unitsarranged as described, bucketscan be filled one at a time, so that the lilling of the buckets does notcome all at once on the tractor. "Similarly, the dumping of the bucketsis accomplished generally one at a time. v

The' structure described is comparatively simple in that it hasrelativelyyfew parts, but these are so disposed that they can ad mirablystand the rough uses to which devices of this kind are subjected.

' I claim: A

l. A scraper. comprising` a frame, wheels secured to said frame, al drawbar pivotally secured to the frameatthe front' end thereof, said framehaving an extension project ingforwardlyabove thefdraw bar, a bucketcarried by the frame, a rack-quadrant secured to Said draw bar, a worincarried by said extension andarranged toengage with saidrackquadrant,and means for rotating the worm to cause arelative movementbetween the.y drawbar. and. the extension,

whereby the frame is oscillated about the 'axis of the wheels, thusraising or lowering the bucket said worm locking said frame in adjustedposition.

A scraper comprising a frame, wheels secured to said frame, a draw bar-pivotally secured to the frame at the front end thereof, said framehaving an extension projecting forwardly above the draw bar, abucketcarried by the frame, a rack-quadrant secured to said draw bar, aworm carried by said extension and arranged to engage with saidrack-quadrant, and means for rotating the worm to cause a relativemovement be tween the draw bar and the extension, whereby the frame isoscillated about the axis of the wheels, thus raising or lowering thebucket, said means comprising a hand wheel and operating rods havinguniversal joints, one of said operating rods being connected with theworm wheel shaft said worm locking said frame in adjusted position.

3. A scraper comprising a frame, wheels for supporting said frame, abucket pivotally secured to said frame, means for tilting said bucket,means for connecting said bucket tilting means to said wheels, wherebysaid bucket tilting means is actuated by said wheels, said buckettilting means comprising links, a projection carried by' one of saidlinks, a lever for connecting said wheels to said bucket tilting means,said projection being adapted to abut said lever sov as to disconnectsaid bucket tilting means from said wheels after said. bucket has beentilted.

4. A scraper comprising a frame, wheels it'or supporting said frame, agear carried by said frame, a small gear adapted to be brought intoengagement with said first named gear, said small gear being actuated bysaid wheels, a. bucket, links connecting said first named gear to saidbucket, a lever for moving said small gear into and out of engagementwith said lirst named gear, and a projection carried by one of saidlinks and being adapted to engage with said lever so as to throw saidlever into inoperative position after said bucket has been tilted.

5. In ascraper, a frame, wheels for supporting said frame, a rear axleconnecting said wheels together, a gear slidably disposed on said axle,a clutch for connecting said gear to said axle, spring means for movingsaid gear into engagement with said clutch, whereby said gear isactuated by said axle, a bell crank lever for moving said gear out ofengagement with said clutch and a lever connected to said bell cranklever 'for moving said gear out ol engagement with said clutch.

6. In a scraper, a f ame, wheels for supporting said frame, a rear axleconnecting said wheels together', a gear slidably disposed on said axle,a clutch for connecting said gear to said axle, spring means for movingsaid gear into engagement with said clutch, whereby said gear is,actuated by said axle, a. bell crank lever for moving said gear out ofengagement with said clutch, lever connected to said lbell crank leverfor moving said gear out of engagement with said clutch, a large gearcarried by said frame and adapted to be actuated by said lirst namedgear, a bucket carried by said frame, links connecting said bucket tosaid large gear, vand adapted to tilt said bucket when said large gearis actuated, and a projection carried by one of said links and adaptedto throw said lever into inoperative position after said bucket has beentilted.

PHILIP C. ANDERSON.

